I think I've touched on this before but...
If your slide has (4) Aluminum tracks on the slide out sidewalls, then it is a Lippert IN-Wall slide. it is retracted using the video above.
If your slide has rams below the floor then it is a Lippert below floor slide and it will have a manual retraction shaft coming out of the motor. That shaft will be on the roof of one of the outside compartments or above the propane tank...can't remember exactly.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).